I recently purchased the pioneer avh-p4200dvd reciever for my car, i also purchased the cable which alows the ipod to play through the reciever and also be able to play its videos through the receiver. For some reason there is static when playing music from the ipod, but movies sound fine, and so does the radio and actual dvd player in the reciever. I have tried 2 different cables so i know that could not be the problem. I also installed 2 12" subwoofers in the trunk which are connected through vga, not sure if that is somehow making the interference.

any help?